Ask HN: Which startups have huge/inspiring missions?

I see a lot of "AI for note taking" or "AI for hiring"... by this I mean I see a lot of startups that are working on kind of unambitious or uninspiring things (not to say they won't work or won't make money).

Where are the Tesla and SpaceX startups of today? Who is out there really trying to push the limits? Which startups are the most inspiring to you subjectively?

I'm sure they exist but am not super sure where to find them.